Frontier Airlines received the most customer complaints for the third year in a row, as complaints against US airlines ...

Frontier Airlines had nearly double the number of complaints per 100,000 passengers as Spirit, which came in second last year ...

The carrier with the highest rate of complaints per 100,000 passengers: Frontier Airlines, which had the worst cancellation record, worst record for on-time arrivals and worst record for ...

Two Frontier Airlines workers have been fired after a video showing a tense exchange between them and a customer who was trying to check into his flight went viral on social media. According to data ...

Researchers also ranked the airlines based on the ratio of complaints each received per 100,000 passengers. Frontier Airlines topped the list for the highest complaint ratio, with 33 grievances ...

United Airlines CEO Scott Kirby said ... The US Department of Transportation said that Spirit and Frontier had the highest rate of customer complaints among domestic carriers in 2023.